The International Atomic Energy Agency (IAEA) and the European Union (EU) reaffirmed support for Iran nuclear deal based on their respective mandates in their joint annual meeting in Vienna on Thursday.

The EU High Representative, as Coordinator of the Joint Commission established under the agreement, known as the Joint Comprehensive Plan of Action (JCPOA), will remain in close contact with the IAEA regarding continued implementation of the agreement, the agency’s official website reported.

The multilateral agreement, signed by the US, Britain, France, China, Russia and Germany, removes all nuclear-related sanctions against Iran in exchange for certain limitations on its peaceful nuclear program.

The IAEA, which is the official institution to verify Iranian compliance, has consistently confirmed the Islamic Republic's commitment to its contractual obligations.

However, US President Donald Trump is opposed to the JCPOA, which was negotiated by his predecessor, Barack Obama, and warned that he might ultimately “terminate” it.

Last month, Trump extended waivers of key economic sanctions on Iran, lifted under the nuclear agreement, for another 120 days but said he was doing so “for the last time.”

He further called on European allies and US Congress to work with him to “fix the disastrous flaws” in the pact or face a US exit.

The European parties to the deal, China and Russia have made it clear that they will not reopen negotiations on the deal, which they say is working as it is; and Trump’s demands could thus only be addressed by domestic US law, with no jurisdiction over Iran or the IAEA, and with no direct effect on the JCPOA.

During their sixth annual Senior Officials Meeting at the IAEA’s headquarters on Thursday, the UN agency and the EU also reviewed progress achieved in working together on a range of nuclear activities and agreed to further enhance cooperation.

The talks provided a forum for exchanging views on strengthening collaboration on nuclear safety, security, safeguards, sustainable development, nuclear energy research and increasing innovation. The two organizations welcomed the fruitful cooperation and progress achieved over the past years. They agreed to deepen cooperation in several areas, particularly in the promotion of nuclear applications for sustainable development.